A testing device for inorganic powder flow properties

Abstract

The utility model discloses a kind of testing devices of inorganic powder flow performance, including support, including the bottom plate and fixed plate fixed by screw, recessed limiting recess is opened on the surface of fixed plate;Adjusting part, including the lifting block of being sleeved in the outside of fixed plate, the press bar of slidingly penetrating lifting block side, and the limiting pressure block fixed with press bar one end by thread rotation, and the limiting protrusion welded with limiting pressure block, and the abutting spring of being installed between the position of the inner side wall of lifting block and limiting pressure block;Rotary part, including the fixed block welded with the side surface of lifting block, the fixed rod of vertical fixed block;Through the rotary part and hopper assembly of design, the angle of the test funnel made of transparent plastic can be changed, the test funnel position in high position and low position is interchanged, by changing the angle of hopper assembly, it is convenient to repeatedly carry out flow speed test for many times, there is the auxiliary test design of rotating funnel angle on powder flow tester.

Description

Technical Field

[0001] This utility model belongs to the technical field of inorganic powder performance testing devices, specifically relating to a testing device for the flow properties of inorganic powder. Background Technology

[0002] When performing performance tests on inorganic powders, the flow rate and volume of inorganic powders are generally tested using the funnel method. Typically, a powder flow meter is used to test the powder flow performance. The main structure of the powder flow meter includes a frame, a funnel, a measuring cup, and an overflow tray. During the test, the powder is placed into the funnel, and the powder flows into the measuring cup. The overflow tray is used to collect the powder that overflows from the measuring cup. The height of the funnel can generally be adjusted, and the adjustment is made by the traditional tightening bolt method.

[0003] When testing the flow properties of powder using a powder flow meter, adjusting the height of the funnel by tightening bolts is not convenient enough. The funnel's stability is easily reduced due to loose bolts. In addition, to ensure the accuracy and stability of the test structure, multiple repeated tests are required to reduce errors. This requires frequently refilling the powder from the measuring cup into the funnel, which increases the workload and is not convenient. Furthermore, powder may spill during the process of refilling the funnel. The angle of the funnel cannot be rotated to facilitate multiple repeated tests. Improvements are needed.

[0004] Existing powder flow meters for testing powder flow properties using the funnel method lack an auxiliary testing device for rotating the funnel. To address this, this application proposes a testing device for the flow properties of inorganic powders. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for the flow properties of inorganic powders, in order to solve the problem mentioned in the background art that there is no auxiliary testing device for rotating the funnel angle on the powder flow measuring instrument.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a testing device for the flow properties of inorganic powders, comprising...

[0007] The bracket includes a base plate and a fixing plate that are fixed by screws, and the surface of the fixing plate is provided with a recessed limiting groove.

[0008] Adjustment components include a lifting block sleeved on the outside of the fixed plate, a pressing rod that slides through the side of the lifting block, a limiting pressure block that is fixed to one end of the pressing rod by screw thread, a limiting protrusion that is welded to the limiting pressure block, and a pressure spring installed between the inner wall of the lifting block and the limiting pressure block.

[0009] The rotating component includes a fixed block welded to the side of the lifting block, a fixed rod of the vertical fixed block, a rotating cylinder rotatably connected to one end of the fixed rod, and a limiting cylinder slidably sleeved on the outside of the fixed rod and the rotating cylinder.

[0010] The funnel assembly includes a feed pipe that passes through a rotating cylinder, a test funnel symmetrically mounted on both ends of the feed pipe, and a funnel cover that is threadedly connected to the test funnel.

[0011] Preferably, the surface of the fixing plate is provided with a sliding groove for the pressing rod to pass through, the limiting pressure block has a "T" shaped cross-section, and the limiting pressure block is engaged with the sliding groove.

[0012] Preferably, a support spring plate is fixed to the bottom surface of the lifting block by screws. The support spring plate has an "L" shaped structure and a fixed hemisphere is welded to the support spring plate. The fixed hemisphere cooperates with the corresponding limiting groove.

[0013] Preferably, the outer surface of the rotating cylinder is provided with a recessed limiting groove a.

[0014] Preferably, a limiting strip is welded to the inner surface of the limiting cylinder, and the limiting strip corresponds to and engages with the corresponding limiting groove a.

[0015] Preferably, the side of the fixing block is connected by threaded guide rods that are symmetrically distributed. The guide rods are inserted into the limiting cylinder, and the inner diameter of the limiting cylinder is the same as the outer diameter of the rotating cylinder.

[0016] Preferably, the feed pipe and the test funnel are internally connected, the end of the test funnel near the feed pipe is conical, and the rotating cylinder and the feed pipe are fixed by screws.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this utility model, the angle of the test funnel made of transparent plastic can be changed by the designed rotating component and funnel assembly, so that the positions of the test funnel at the high position and the low position can be interchanged. By changing the angle of the funnel assembly, it is convenient to repeatedly perform flow rate tests.

[0019] 2. In this utility model, the pressing rod is pressed by the designed adjusting component and supporting spring plate. The pressing rod squeezes the limiting pressure block and the pressure spring. There is a gap between the limiting pressure block and the fixed plate, which facilitates the quick adjustment of the height position of the lifting block. The supporting spring plate supports the lifting block. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2This is a schematic diagram of the main structure of the testing device of this utility model;

[0022] Figure 3 For the present utility model Figure 1 Enlarged structural diagram of section A in the middle;

[0023] Figure 4 This is a cross-sectional view of the lifting block of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the support spring plate of this utility model;

[0025] In the diagram: 2. Lifting block; 3. Pressing rod; 4. Fixing block; 5. Fixing rod; 6. Limiting cylinder; 7. Rotating cylinder; 9. Support spring plate; 11. Base plate; 12. Fixing plate; 21. Compression spring; 22. Limiting pressure block; 23. Limiting protrusion; 41. Guide rod; 61. Limiting strip; 81. Conveying pipe; 82. Test funnel; 83. Funnel cover; 91. Fixing hemisphere; 121. Slide groove; 122. Limiting groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 5This utility model provides a technical solution: a testing device for the flow properties of inorganic powder, including a support, comprising a base plate 11 and a fixing plate 12 fixed by screws. The base plate 11 and the fixing plate 12 serve as a supporting structure, supporting the adjusting component and the funnel assembly. A concave limiting groove 122 is formed on the surface of the fixing plate 12, and a limiting protrusion 23 is embedded in the limiting groove 122, serving to limit the limiting pressure block 22. The adjusting component includes a lifting block 2 sleeved on the outside of the fixing plate 12 and a sliding through-hole. The lifting block 2 has a pressing rod 3 on its side, a limiting block 22 fixed to one end of the pressing rod 3 by a threaded connection, a limiting protrusion 23 welded to the limiting block 22, and a pressure spring 21 installed between the inner wall of the lifting block 2 and the limiting block 22. When changing the height of the funnel assembly, a pressing force is applied to the pressing rod 3 with one hand, and the pressing rod 3 squeezes the limiting block 22 and the pressure spring 21. There is a gap between the limiting block 22 and the fixing plate 12, which facilitates quick adjustment of the height of the lifting block 2. Releasing the pressing rod... The lever 3 is pulled in the opposite direction, and the elastic force of the compression spring 21 acts on the limiting block 22. The limiting block 22 is embedded inside the fixed plate 12, and the limiting protrusion 23 is embedded inside the limiting groove 122, so that the lifting block 2 is firmly placed on the outside of the fixed plate 12, and the compression spring 21 is always in a compressed state; the rotating component includes a fixed block 4 welded to the side of the lifting block 2, a fixed rod 5 perpendicular to the fixed block 4, a rotating cylinder 7 rotatably connected to one end of the fixed rod 5, and a limiting cylinder 6 slidably sleeved on the outside of the fixed rod 5 and the rotating cylinder 7. Rotation allows for changing the angle of the funnel assembly, facilitating repeated flow rate tests. The funnel assembly includes a feed pipe 81 that passes through the rotating cylinder 7, test funnels 82 symmetrically mounted at both ends of the feed pipe 81, and a funnel cover 83 that is threadedly connected to the test funnels 82. The test funnels 82 are made of transparent plastic material for easy observation of the flow rate. The funnel cover 83 and the test funnels 82 are separate structures, making it easy to open the funnel cover 83 and put the inorganic powder into the test funnels 82 for powder flow rate testing.

[0028] In this embodiment, a groove 121 for the pressing rod 3 to pass through is provided on the surface of the fixing plate 12. The limiting pressure block 22 has a "T" shaped cross section. The limiting pressure block 22 is engaged with the groove 121. The limiting pressure block 22 is embedded in the groove 121. The limiting pressure block 22 is interference-fitted with the fixing plate 12.

[0029] In this embodiment, a support spring plate 9 is fixed to the bottom surface of the lifting block 2 by screws. The support spring plate 9 has an "L" shaped structure. A fixed hemisphere 91 is welded on the support spring plate 9. The fixed hemisphere 91 cooperates with the corresponding limiting groove 122. The support spring plate 9 is made of spring steel. The support spring plate 9 plays the role of supporting the lifting block 2. In addition, the fixed hemisphere 91 is embedded in the corresponding limiting groove 122, which also plays a limiting role and prevents the support spring plate 9 from moving down.

[0030] In this embodiment, the outer surface of the rotating cylinder 7 is provided with a concave limiting groove a, and the inner surface of the limiting cylinder 6 is welded with a limiting strip 61. The limiting strip 61 corresponds to the limiting groove a. The cross-section of the limiting strip 61 is a semi-circular plate shape. The limiting strip 61 is embedded in the limiting groove a to limit the rotating cylinder 7 and prevent the rotating cylinder 7 from rotating.

[0031] In this embodiment, symmetrically distributed guide rods 41 are connected to the side of the fixing block 4 by threaded connection. The guide rods 41 are inserted into the limiting cylinder 6. The inner diameter of the limiting cylinder 6 is the same as the outer diameter of the rotating cylinder 7. The limiting cylinder 6 is sleeved on the outside of the rotating cylinder 7 to limit the rotating cylinder 7. The guide rods 41 play the role of limiting the limiting cylinder 6 and preventing the limiting cylinder 6 from deflecting.

[0032] In this embodiment, the feed pipe 81 and the test funnel 82 are internally connected. The end of the test funnel 82 near the feed pipe 81 is conical. The rotating cylinder 7 and the feed pipe 81 are fixed by screws. The test funnel 82 is filled with inorganic powder, which is allowed to leak down from the narrow end of the test funnel 82 under the action of gravity.

[0033] Working principle and usage process of this utility model:

[0034] When testing the flow properties of inorganic powder, manually open the funnel lid 83, put the inorganic powder into the test funnel 82, and rotate the funnel lid 83 to seal the test funnel 82.

[0035] Rotate the rotating cylinder 7 180 degrees to rotate the test funnel 82 from the lower position to the higher position;

[0036] The limiting cylinder 6 is sleeved on the outside of the rotating cylinder 7 to limit the rotating cylinder 7, prevent the rotating cylinder 7 from rotating, and keep the axis of the test funnel 82 in a vertical state.

[0037] With the test funnel 82 in a vertical position, the powder falls from the narrow end of the test funnel 82 under the action of gravity and falls into the interior of the test funnel 82 at a lower position. The test funnel 82, made of transparent plastic material, allows the flow rate to be observed.

[0038] When multiple tests are required, the limiting cylinder 6 moves, the rotating cylinder 7 is rotated, the position of the test funnel 82 is changed, and the above operation is repeated to test the flow properties of inorganic powder.

[0039] When changing the height of the test funnel 82, apply a pressing force to the pressing rod 3 with one hand. The pressing rod 3 squeezes the limiting block 22 and the pressure spring 21. There is a gap between the limiting block 22 and the fixed plate 12, which facilitates quick adjustment of the height of the lifting block 2.

[0040] At the same time, lift one end of the support plate 9 so that the fixed hemisphere 91 leaves the limiting groove 122;

[0041] Release the pressing rod 3 and pull it in the opposite direction. The elastic force of the pressure spring 21 acts on the limiting block 22. The limiting block 22 is embedded in the interior of the fixed plate 12, and the limiting protrusion 23 is embedded in the interior of the limiting groove 122, so that the lifting block 2 is stable on the outside of the fixed plate 12, and the pressure spring 21 is always in a compressed state.

[0042] Release the support spring plate 9, the deformed support spring plate 9 returns to its original position, the fixed hemisphere 91 is embedded in the limiting groove 122, the support spring plate 9 plays the role of supporting the lifting block 2, the fixed hemisphere 91 is embedded in the corresponding limiting groove 122, which also plays a limiting role to prevent the support spring plate 9 from moving down.

[0043] In summary: The powder flow meter has an auxiliary testing device for rotating the angle of a funnel made of transparent plastic. Through the designed rotating parts and funnel assembly, the angle of the test funnel 82 can be changed, allowing the positions of the test funnel 82 at the high and low positions to be interchanged. By changing the angle of the funnel assembly, it is convenient to repeatedly perform flow rate tests.

[0044] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for the flow properties of inorganic powders, characterized in that: include The bracket includes a base plate (11) and a fixing plate (12) fixed by screws, wherein a recessed limiting groove (122) is provided on the surface of the fixing plate (12); The adjusting component includes a lifting block (2) sleeved on the outside of the fixed plate (12), a pressing rod (3) that slides through the side of the lifting block (2), a limiting pressure block (22) that is fixed to one end of the pressing rod (3) by screw thread, a limiting protrusion (23) that is welded to the limiting pressure block (22), and a pressure spring (21) installed between the inner wall of the lifting block (2) and the limiting pressure block (22); The rotating component includes a fixed block (4) welded to the side of the lifting block (2), a fixed rod (5) of the vertical fixed block (4), a rotating cylinder (7) rotatably connected to one end of the fixed rod (5), and a limiting cylinder (6) slidably sleeved on the outside of the fixed rod (5) and the rotating cylinder (7). The funnel assembly includes a feed pipe (81) that passes through the rotating cylinder (7), a test funnel (82) symmetrically installed at both ends of the feed pipe (81), and a funnel cover (83) that is threadedly connected to the test funnel (82).

2. The testing device for the flow properties of inorganic powder according to claim 1, characterized in that: The surface of the fixing plate (12) is provided with a groove (121) through which the pressing rod (3) passes. The limiting pressure block (22) has a "T" shaped cross section and is engaged with the groove (121).

3. The testing device for the flow properties of inorganic powder according to claim 1, characterized in that: The bottom surface of the lifting block (2) is fixed with a support spring plate (9) by screws. The support spring plate (9) has an "L" shaped structure. A fixed hemisphere (91) is welded on the support spring plate (9). The fixed hemisphere (91) cooperates with the corresponding limiting groove (122).

4. The testing device for the flow properties of inorganic powder according to claim 1, characterized in that: The outer surface of the rotating cylinder (7) is provided with a recessed limiting groove a.

5. The testing device for the flow properties of inorganic powder according to claim 4, characterized in that: The inner surface of the limiting cylinder (6) is welded with a limiting strip (61), and the limiting strip (61) is matched with the corresponding limiting groove a.

6. The device for testing the flow properties of inorganic powder according to claim 1, characterized in that: The side of the fixed block (4) is connected by a threaded connection of symmetrically distributed guide rods (41), which are inserted into the limiting cylinder (6). The inner diameter of the limiting cylinder (6) is the same as the outer diameter of the rotating cylinder (7).

7. The testing device for the flow properties of inorganic powder according to claim 1, characterized in that: The feed pipe (81) and the test funnel (82) are internally connected. The end of the test funnel (82) near the feed pipe (81) is conical. The rotating cylinder (7) and the feed pipe (81) are fixed by screws.

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